Description
The Millboard® Envello Aluminium Perforated Closure Trim (3m) is designed to protect the ventilated cavity behind Millboard® Envello cladding boards while maintaining vital airflow. Installed discreetly behind the boards, this trim helps prevent insects, pests and small rodents from accessing the cavity, reducing the risk of damage and long-term issues.
This is a genuine Millboard® accessory that we supply for use with Shadow Line+ and Board & Batten+ cladding systems.
It should be installed wherever there is an open entry point to the ventilated cavity, ensuring the cladding system remains protected without restricting ventilation.
Why Use a Perforated Closure Trim?
This trim is an essential part of a correct cladding installation. It:
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Helps stop insects and rodents entering the cavity
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Maintains consistent airflow behind the cladding
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Supports moisture control and long-term performance
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Improves overall durability of your cladding system
Where It’s Used
The trim can be installed in multiple locations, including:
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Alongside the starter trim at the base
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At the top of the cladding area
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With external and internal corner profiles
Suitable for use with:
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25mm battens
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50mm battens
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Millboard® Shadow Line+ cladding
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Millboard® Board & Batten+ cladding
Product Specifications
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Length: 3.0m
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Material: Aluminium
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Application: Ventilated cavity protection
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Compatibility: Millboard® Envello cladding systems
Frequently Asked Questions (FAQ)
What does a perforated closure trim do?
It blocks insects and rodents from getting into the ventilated cavity while still allowing air to flow through the system.
Do I need this trim for my cladding?
Yes, it’s recommended wherever there are open edges or entry points in a ventilated cladding system.
Where should it be installed?
Common locations include the base of the wall, the top of the cladding run, and around corners when used with corner profiles.
Will it affect ventilation?
No. The perforated design allows airflow while still offering protection.
Is it compatible with all battens?
It’s designed to work with 25mm and 50mm battens commonly used for Millboard® cladding installations.
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